niahloves
  • niahloves
Which math expression represents the phrase? 9 times the sum of a number and 7 A. 9 · n + 7 B. 9 · (n + 7) C. 9 · (n – 7) D. 9 · (n · 7
Mathematics
katieb
  • katieb
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welshfella
  • welshfella
which one do you think it is?
jameshorton
  • jameshorton
it d
welshfella
  • welshfella
note that the number is added to 7 first before the multiply

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More answers

anonymous
  • anonymous
A
welshfella
  • welshfella
@jameshorten plz dont just give the answer
jameshorton
  • jameshorton
yes sir or mam
welshfella
  • welshfella
d is wrong
jameshorton
  • jameshorton
no it not
jameshorton
  • jameshorton
who ask the question
jameshorton
  • jameshorton
help me on mines
welshfella
  • welshfella
Its not A because the multiplication is done first in A
welshfella
  • welshfella
when you have something in parentheses ( and ) that calculation is done first
welshfella
  • welshfella
so if i for example had to compute 3* (4 + 7) i would do the 4+7 first then multiply by 3
niahloves
  • niahloves
so what is it
welshfella
  • welshfella
the question says' 9 times the sum of a number and 7' - this means the x + 7 will be calculated first therefore x + 7 goes into parentheses so which one is it?
niahloves
  • niahloves
c
welshfella
  • welshfella
they have n not x That doesnt matter
niahloves
  • niahloves
is it right or wrong
welshfella
  • welshfella
why C? that has (x - 7) not (x + 7) sum = +
welshfella
  • welshfella
take another look
niahloves
  • niahloves
o b
welshfella
  • welshfella
right |dw:1441131763685:dw|

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